Improved lossless intra coding for H.264/MPEG-4 AVC

被引:86
|
作者
Lee, Yung-Lyul [1 ]
Han, Ki-Hun
Sullivan, Gary J.
机构
[1] Sejong Univ, Dept Comp Engn, Seoul 143747, South Korea
[2] Microsoft Corp, Redmond, WA 98052 USA
关键词
AVC; differential pulse code modulation (DPCM); H.264; intra coding; lossless image coding; lossless video coding; MPEG-4; spatial prediction;
D O I
10.1109/TIP.2006.877396
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A new lossless intra coding method based on sample-by-sample differential pulse code modulation (DPCM) is presented as an enhancement of the H.264[MPEG-4 AVC standard. The H.264/AVC design includes a multidirectional spatial prediction method to reduce spatial redundancy by using neighboring samples as a prediction for the samples in a block of data to be encoded. In the new lossless; intra coding method, the spatial prediction is performed based on samplewise DPCM instead of in the block-based manner used in the current H.264/AVC standard, while the block structure is retained for the residual difference entropy coding process. We show that the new method, based on samplewise DPCM, does not have a major complexity penalty, despite its apparent pipeline dependencies. Experiments show that the new lossless intra coding method reduces the bit rate by approximately 12% in comparison with the lossless; intra coding method previously included in the H.264/AVC standard. As a result, the new method is currently being adopted into the H.264/AVC standard in a new enhancement project.
引用
收藏
页码:2610 / 2615
页数:6
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